When the girls offer to help Charlotte learn how to control her new-found powers, she rejects them, thinking that they are trying to cut her off from her full potential. Charlotte's powers soon go to her head, as she declares herself the only "real" mermaid, and recklessly uses her powers in public. After almost killing Ronnie the dolphin in a fit of panic, she then tries to get revenge on Nate when he attacks Lewis, and it takes all the girls' effort to stop her. Will Charlotte's lack of control mean the exposure of the mermaids' secret.